Apparatus for raising, lowering, and storing ships&#39; boats.



W. E. ARMSTRONG. APPARATUS FOB. RAISING, LOWERING, AND STORING SHIPS BOATS. APPLIOATION FILED APR. 18, 1913.

1,090,962. Patented Mar. 24, 1914 COLUMBIA PLANOGRAPH c0. WASHINGTON; n. c.

WILLIAM EDWARD ARMSTRONG, OF BELFAST, IRELAND, ASSIGNOR T0 HARLAND & WOLFE, LIMITED, OF BELFAST, IRELAND.

APPARATUS FOR RAISING, LOWERING, AND STORING SHIPS BOATS.

Specification of Letters Patent.

Patented Mar. 2a, 191%.

Application filed April 18, 1913. Serial No. 762,081.

To all whom it may concern Be it known that I, VILLIAM EDWARD ARMSTRONG, a subject of the King of Great Britain, residing at the Queens Island Shipbuilding and Engineering Works, Belfast, Ireland, have invented new and useful Improvements in Apparatus for Raising, Lowering, and Storing Ships Boats, of which the following is a specification.

The object of this invention is to enable a boat to be lowered from or raised onto a ship on an even keel in spite of the ship being down by the head or stern.

The ropes by which a ships boat is suspended are commonly wound on two coaxial drums, means being provided for simultaneously revolving the drums. According to this invention such drums are connected and locked together by a worm and worm wheel so that they normally revolve together but can be revolved relatively to each other by turning the worm.

In the accompanylng drawings :Figure l is a plan view of apparatus constructed in accordance with this invention. Fig. 2 is an end elevation thereof, and Fig. 3 is a longitudinal section of the same.

a and b are the two drums. The drum a is fixed to a shaft 0 to which is also fixed a spur wheel 03 gearing with a pinion e on a shaft 7 which is driven in any convenient manner. The drum 6 is fixed to a sleeve 9 on the shaft 0. This sleeve has fixed to it a bracket h carrying a worm gearing with a worm wheel is keyed on the shaft 0. Normally therefore the drums a and Z) are locked together and are driven simultaneously by rotating the shaft f, but by turning the Worm j the drums can be rotated relatively to each other until the boat is on an even keel.

I claim as my invention,

1. The combination of a pair of drums, a worm and worm wheel normally locking the drums together and means for simultaneously rotating the drums.

2. The combination of a shaft, a drum fixed to the shaft, a sleeve on the shaft, a drum fixed to the sleeve, a worm and worm wheel normally locking the sleeve to the shaft and means for rotating the shaft.

WILLIAM EDWARD ARMSTRONG.

Witnesses:

SAxoN J. PAYNE, ROBERT Gr. TATE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patente. Washington, D. G." 

